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ADS7066
  • ADS7066
  • ADS7066
  • ADS7066

ADS7066

ACTIVE

Eight-channel, 250-kSPS, 16-bit analog-to-digital converter with internal reference, GPIOs and SPI

Texas Instruments ADS7066 Product Info

1 April 2026 4

Parameters

Resolution (Bits)

16

Sample rate (max) (ksps)

250

Number of input channels

8

Interface type

SPI

Architecture

SAR

Input type

Single-ended

Multichannel configuration

Multiplexed

Rating

Catalog

Reference mode

External, Internal

Input voltage range (max) (V)

5.5

Input voltage range (min) (V)

0

Features

Daisy-Chainable, GPIO, Small Size

Operating temperature range (°C)

-40 to 125

Power consumption (typ) (mW)

4

Analog supply voltage (min) (V)

3

Analog supply voltage (max) (V)

5.5

SNR (dB)

86

Digital supply (min) (V)

1.65

Digital supply (max) (V)

5.5

Package

DSBGA (YBH)-16-2.56 mm² 1.6 x 1.6

Features

  • Small solution size:
    • DSBGA and WQFN packages
    • Space-saving, capless, 2.5-V internal reference
  • 8 channels configurable as any combination of:
    • Up to 8 analog inputs, digital inputs, or digital outputs
  • Programmable averaging filters:
    • Programmable sample size for averaging
    • Averaging with internal conversions
    • 20-bit resolution for average output
  • Low-leakage multiplexer with channel sequencer:
    • Manual mode, on-the-fly mode, and auto-sequence mode
  • Excellent AC and DC performance:
    • SNR: 91.9 dB, THD: –100 dB
    • Improved SNR with programmable averaging filters
    • INL: ±1 LSB, 16-bit no missing codes
    • Internal calibration improves offset and drift
    • 250 kSPS sample rate with no latency
  • Wide operating range:
    • ADC input range: 0 V to V REF and 2 × V REF
    • Analog supply: 3 V to 5.5 V
    • Digital supply: 1.65 V to 5.5 V
    • Temperature range: –40°C to +125°C
  • Enhanced-SPI digital interface:
    • High-speed, 60-MHz SPI
  • Small solution size:
    • DSBGA and WQFN packages
    • Space-saving, capless, 2.5-V internal reference
  • 8 channels configurable as any combination of:
    • Up to 8 analog inputs, digital inputs, or digital outputs
  • Programmable averaging filters:
    • Programmable sample size for averaging
    • Averaging with internal conversions
    • 20-bit resolution for average output
  • Low-leakage multiplexer with channel sequencer:
    • Manual mode, on-the-fly mode, and auto-sequence mode
  • Excellent AC and DC performance:
    • SNR: 91.9 dB, THD: –100 dB
    • Improved SNR with programmable averaging filters
    • INL: ±1 LSB, 16-bit no missing codes
    • Internal calibration improves offset and drift
    • 250 kSPS sample rate with no latency
  • Wide operating range:
    • ADC input range: 0 V to V REF and 2 × V REF
    • Analog supply: 3 V to 5.5 V
    • Digital supply: 1.65 V to 5.5 V
    • Temperature range: –40°C to +125°C
  • Enhanced-SPI digital interface:
    • High-speed, 60-MHz SPI

Description

The ADS7066 is a small, 16-bit, 8-channel, high-precision successive-approximation register (SAR) analog-to-digital converter (ADC). The ADS7066 has an integrated capless reference and a reference buffer that helps reduce the overall solution size by requiring fewer external components. The device family includes the ADS7067 (800 kSPS) and the ADS7066 (250 kSPS) speed variants.

The ADS7066 features built-in offset calibration for improved accuracy over wide operating conditions of the system. The programmable averaging filters enable higher resolution measurement. The eight channels of the ADS7066 can be individually configured as analog inputs, digital inputs, or digital outputs that simplify circuit design for mixed signal feedback and digital control.

The enhanced-SPI enables the ADS7066 in achieving high throughput at lower clock speeds, thereby simplifying the board layout and lowering system cost. The ADS7066 features a cyclic redundancy check (CRC) for data read and write operations and the power-up configuration.

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